Holder for reaming-tools.



H. BUTLER.

HOLDER FOR REAMING TOOLS.

APPLIUATION r1131) 110V. 6, 1911.

1,041,015. Patented 0111111912.

liliturnnra 3111111 111111 Anurnrg;

UNITED STATES PATENT OFFICE.

HERBERT BUTLER, OF DETROIT, MICHIGAN.

HOLDER FOR REAMING-TOOLS.

Specification of Letters Patent.

- Application filed November 6, 1911. Serial No. 658,707.

Patented Oct. 15, 1912 To all whom .z't may concern Be it known that I, HERBERT BUTLER, a citizen of the United States, residin at Detroit, in the county of Vayne, tate of Michigan, have invented certain new and useful Improvements in Holders for Reaming-Tools; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use thesame', reference being had to the accompanying drawings, andto the characters of reference marked thereon, which form a part of this specification.

This invention relates to a holder for reaming tools, and consists in the construc tion and arrangement of parts hereinafter more fully set forth and pointed out particularly in the claims.

The object ofthe invention is to provide simple and eilicient means for holdin a reamcr or similar tool which is to be fed 1nto the bore-of revolving work for the purpose of reaming said bore to the desired diameter. the arrangement being such as to .allow of a lateral movement of the stem or shank of the reamer in the holding member to compensate for any variation between the centers of the tool and the bore in the work to be operated upon.

The invention contemplates such an association and cooperation of parts as to afford lateral movement in all direct-ions so that the tool and its shank will at all'times be parallel with the axis of the center around which the work revolves, and at the same tiine will be securely held against rotation in the holding member, whereby the bore in the work may be reamed parallel with the axis thereof and to a perfectly cylindrical form.

The above object is attained by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a general view showing the turret of a lathe and my improved reamer holder mounted therein. Fig. 2 is'a central longitudinal section through the holder. Fig. 3 is an elevation of the locking block having hemispherical bearing members on the-opposite faces thereof, said block serving to effect a jointed locking connect-ion bei-neen the holder. which is mounted in a turret), or tail stock, and the socket member which is loosely seated therein, and is adapted to receive the stem or shank which carelevation of the socket member showing the locking block tilted in the recess in the end thereof. Fig. 9

tion of the locking block.

Referring to the drawings. by the charac-,

ters of reference thereon, 1 designates a holding member having a shank 2 adapted to be secured in the turret or tail stock of "a lathe or similar machine.

seated therein, and having a socket 4: in which the stem carrying the tool or reamer 6 is secured by means of the set screw 7.

Formed in the side of the socket member 3 is a transverse slot 8 into which the inner end of the set screw 9 extends, said screw being threaded in the wall of the holder and serving to retain the socket member therein while at the same time affording the socket member facility of movement.

In the bottom of the tubular holder. is an oblong recess 10 having a rounded central depression 11. Formed in the reduced end of the socket member is an oblong recess 12 corresponding with the recess 10 in the holder, and having a central rounded depression 13. Adapted to lie partly in each of the registering recesses 10 and 12 in the bottom of the holder andthe reduced end of the socket member, is a locking block 14: which is oblong in shape and is slightly narrower and shorter than said recesses, but is of a thickness to extend from one recess into the other, whereby, when said parts are placed together, the socket member will be permitted to have a slight rotary movement within the holder in either direction, but will be locked against further rotary movement by an engagement of the is a transverse section. through the holder and socket member, as on line 99 of Fig. 1. Fig. 10 is an end eleva- The holder is' tubular and the opening therein is of a di-. ameter to freely receive the reduced inner end of the socket member 3 adapted to be.

edges of said block with the sides of said recesses at the limit of said restricted movement. Extending from the opposite faces of the block are the hemispherical lugs or projections 15 which freely lie in the rounded depressions 11 and 13 formed in the recesses 10 and 12 respectively. The distance through said lugs axially of the holder such movement, whereby-the stem 5 carried in the socket member is permitted to shift laterally with respect .to the holder and at the same time maintain its axis in parallelism with the axis of the holder, and not at an angle thereto as would result were the centers with respect to the socket member and holder not allowed to shift through,

" .the tilting of the locking block. By means of this'arrangement the reamer or tool is permitted to center itself in the bore of the work axially thereof andnot inclined with respect thereto, whereby, as the work re- .volves, a perfect-1y cylindrical aperture is ream ed parallel to the axis of the bore.

the'ilocking block is permitted to tilt in all directions when confined in the recesses between the bottom of the holder and the end of the socket member the shifting of the socket member within the holder may occur at any point in the circumference thereof, thereby obviating the necessity of setting the holder in the turret or other sup-' port in a particular manner. While the locking block affords such facility of move-v .ment of the socket memberwithin the holder as to allow the socket member to readily adjust itself within the holder, it also serves as a locking connection between the holder and socket member to hold the tool rigidly in osit-ion after adjustment against the strain of. the turning Work upon which the tool is operating.

Having thus fully set forth my invention, what I claim as new and desire to secure by Letters Patent, is 2- .1. In a device for the purpose set forth,

a tubular holder, a tool carrying member seated in the tubular holder and having a copies of this patent may be obtained for limited lateral movement therein, and a combined centering and lockmg block inter posed between the holder and tool carrying member, said block cooperating with said parts to allow a lateral shifting of the tool carrying member within the holder in all d1rect1ons-and yet effect a locking connection between the holder and said member to prevent a rotation of the tool carrying member within the holderbeyond a 'predeten' mined point.

' 2. A tool holder comprising a tubular holding member, a tool carrier seated therein and having 'a limitedv lateral movement, said holder and said tool carrier having registering recesses formed vin the axial alined parts thereof, and a combined centering and locking blocklyingfreely in said recesses to effect a locking connection between said parts which will allow a free lateral shifting of the carrier within the holder.

8. A tool holder comprising a tubular holding member, having a recess in the bottom thereof provided with a central depression, a tool carrier adapted to lie within the'holder to have a slight lateral movement therein, said carrier having a recess in the end thereofprovided with a central depression, a locking block lying inthe recesses between said parts and having rounded pro-v jections which enter said depressions, and

means for loosely retaining the carrier within the holding member.

4. A tool holder comprising a tubular holding member having a recess in the bottom thereof, a cylindrical tool carrier lying within'said holder and adapted to have a limited lateral movement therein, said carrier having a recess in its end corresponding with the recess in the vbottom of the holder, a locking block fitting loosely in said recess and extending between said parts, and

means for loosely retaining the carrier within the holder.

In testimony whereof, I sign this specie HERBERT BUTLER,

Witnesses: 1

E. S. WHEELER, M. E. BRoEsAMLE.

fire cents each, by addressing the Commissioner of Patents. Washington, I). G.

fication in the presence of two witnesses. 

